smtp(1M)                                                    smtp(1M)


       NAME
             smtp - send mail to a remote host using Simple Mail Transfer
             Protocol

       SYNOPSIS
             /usr/lib/mail/surrcmd/smtp [-d debug level]

       DESCRIPTION
             smtp is a daemon that runs while there is mail to be sent to
             remote hosts using the Simple Mail Transfer Protocol (SMTP).
             The messages are retrieved from /var/spool/mailq in the form
             of C. files and D. files.  The C. files are the control files
             for the messages, containing the sender, recipients, and path
             of the D. file.

             smtp first attempts to establish a connection to the host
             given in the control file.  If it cannot, it then generates a
             list of ``message exchangers'' with which the mail may be
             forwarded.  This list is generated by querying the nameserver
             for all MX records for the host given in the control file (as
             specified in RFC974).  smtp then tries to connect to each host
             in preference order (lower preference numbers first) until one
             accepts the call.  The message is then delivered.  smtp
             attempts to deliver over each connection oriented transport
             that is defined in the file /etc/netconfig and whose name to
             address translation module returns an address for the
             destination host and the service smtp.

             Once it has a connection to a host, smtp will deliver all
             queued messages for that host over the connection before
             taking the connection down.

             The option to smtp and its meaning is as follows:

             -d debug level
                           This option turns on debugging at the level
                           given.  Debugging information is printed on
                           standard error.

             smtp is run by the smtpqer process in order to deliver mail
             queued in /var/spool/mailq.







                           Copyright 1994 Novell, Inc.               Page 1

      smtp(1M)                                                    smtp(1M)


      FILES
            /etc/inet/services   list of TCP/UDP services
            /var/spool/mailq     where messages are queued

      REFERENCES
            smtpd(1M), smtpqer(1M)
            RFC821 - Simple Mail Transfer Protocol
            RFC974 - Mail Routing and the Domain System








































                          Copyright 1994 Novell, Inc.               Page 2